Home / 8,147.49-12,222.68-2,885.56

Finding the Fourth Proportional to 8,147.49, 12,222.68 and 2,885.56

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Solution

The fourth proportional to 8,147.49, 12,222.68 and 2,885.56 is: 4,328.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,147.49 : 12,222.68 = 2,885.56 : x
  2. Step 2: Convert to fraction form
    8,147.49/12,222.68 = 2,885.56/x
  3. Step 3: Cross multiply
    8,147.49x = 12,222.68 × 2,885.56
  4. Step 4: Simplify right side
    8,147.49x = 35,269,263.68
  5. Step 5: Solve for x
    x = 35,269,263.68/8,147.49
  6. Step 6: Final answer
    x = 4,328.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.